Data commit

Task/Rep-string/Python/rep-string-4.py

@@ -0,0 +1,25 @@
+import re
+
+matchstr = """\
+1001110011
+1110111011
+0010010010
+1010101010
+1111111111
+0100101101
+0100100
+101
+11
+00
+1"""
+
+def _checker(matchobj):
+    g0, (g1, g2, g3, g4) = matchobj.group(0), matchobj.groups()
+    if not g4 and g1 and g1.startswith(g3):
+        return '%r repeats %r' % (g0, g1)
+    return '%r is not a rep-string' % (g0,)
+
+def checkit(txt):
+    print(re.sub(r'(.+)(\1+)(.*)|(.*)', _checker, txt))
+
+checkit(matchstr)